| /* |
| * Copyright 2020 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #ifndef SkSVGFilterContext_DEFINED |
| #define SkSVGFilterContext_DEFINED |
| |
| #include "include/core/SkRect.h" |
| #include "include/core/SkRefCnt.h" |
| #include "include/core/SkString.h" |
| #include "include/private/SkTHash.h" |
| #include "modules/svg/include/SkSVGTypes.h" |
| |
| class SkImageFilter; |
| class SkSVGFeInputType; |
| class SkSVGRenderContext; |
| |
| class SkSVGFilterContext { |
| public: |
| SkSVGFilterContext(const SkRect& filterEffectsRegion, |
| const SkSVGObjectBoundingBoxUnits& primitiveUnits) |
| : fFilterEffectsRegion(filterEffectsRegion) |
| , fPrimitiveUnits(primitiveUnits) |
| , fPreviousResult({nullptr, filterEffectsRegion, SkSVGColorspace::kSRGB}) {} |
| |
| const SkRect& filterEffectsRegion() const { return fFilterEffectsRegion; } |
| |
| const SkRect& filterPrimitiveSubregion(const SkSVGFeInputType&) const; |
| |
| const SkSVGObjectBoundingBoxUnits& primitiveUnits() const { return fPrimitiveUnits; } |
| |
| void registerResult(const SkSVGStringType&, const sk_sp<SkImageFilter>&, const SkRect&, SkSVGColorspace); |
| |
| void setPreviousResult(const sk_sp<SkImageFilter>&, const SkRect&, SkSVGColorspace); |
| |
| bool previousResultIsSourceGraphic() const; |
| |
| SkSVGColorspace resolveInputColorspace(const SkSVGRenderContext&, |
| const SkSVGFeInputType&) const; |
| |
| sk_sp<SkImageFilter> resolveInput(const SkSVGRenderContext&, const SkSVGFeInputType&) const; |
| |
| sk_sp<SkImageFilter> resolveInput(const SkSVGRenderContext&, const SkSVGFeInputType&, SkSVGColorspace) const; |
| |
| private: |
| struct Result { |
| sk_sp<SkImageFilter> fImageFilter; |
| SkRect fFilterSubregion; |
| SkSVGColorspace fColorspace; |
| }; |
| |
| const Result* findResultById(const SkSVGStringType&) const; |
| |
| std::tuple<sk_sp<SkImageFilter>, SkSVGColorspace> getInput(const SkSVGRenderContext&, |
| const SkSVGFeInputType&) const; |
| |
| SkRect fFilterEffectsRegion; |
| |
| SkSVGObjectBoundingBoxUnits fPrimitiveUnits; |
| |
| SkTHashMap<SkSVGStringType, Result> fResults; |
| |
| Result fPreviousResult; |
| }; |
| |
| #endif // SkSVGFilterContext_DEFINED |